Cheapest return flights from Orlando to Knoxville in September from $113

AirHint found the following cheapest return flights from Orlando (MCO) to Knoxville (TYS) in September 2025 (see full year).

Return flights

08 Sep - 19 Sep Allegiant Air direct
26 Sep - 29 Sep Allegiant Air direct
01 Sep - 12 Sep Allegiant Air direct
01 Sep - 19 Sep Allegiant Air direct
15 Sep - 19 Sep Allegiant Air direct
26 Sep - 01 Oct Allegiant Air direct
08 Sep - 29 Sep Allegiant Air direct
26 Sep - 03 Oct Allegiant Air direct
01 Sep - 05 Sep Allegiant Air direct
12 Sep - 19 Sep Allegiant Air direct
22 Sep - 29 Sep Allegiant Air direct
26 Sep - 10 Oct Allegiant Air direct
15 Sep - 29 Sep Allegiant Air direct
22 Sep - 01 Oct Allegiant Air direct
29 Sep - 20 Oct Allegiant Air direct
15 Sep - 01 Oct Allegiant Air direct
22 Sep - 03 Oct Allegiant Air direct
29 Sep - 03 Oct Allegiant Air direct
15 Sep - 03 Oct Allegiant Air direct
22 Sep - 10 Oct Allegiant Air direct

Also check the deals for one-way flights from Orlando to Knoxville in September.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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